function _textformatter_validate_class in Text list formatter 8.2

Same name and namespace in other branches

1. 7 textformatter.module \_textformatter_validate_class()

Validate that a space-separated list of values are lowercase and appropriate for use as HTML classes.

See also

textformatter_field_formatter_settings_form()

1 string reference to '_textformatter_validate_class'

ListFormatter::settingsForm in lib/Drupal/textformatter/Plugin/field/formatter/ListFormatter.php

Implements Drupal\field\Plugin\Type\Formatter\FormatterInterface::settingsForm().

File

./textformatter.module, line 167

Provide a field formatter to render values as HTML or comma-separated lists.

Code

function _textformatter_validate_class($element, &$form_state) {
  $value = drupal_array_get_nested_value($form_state['values'], $element['#parents']);
  $classes = explode(' ', $value);
  foreach ($classes as $class) {
    if ($class != drupal_html_class($class)) {
      form_error($element, t('List classes contain illegal characters; classes should be lowercase and may contain letters, numbers, and dashes.'));
      return;
    }
  }
}